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For those who don't know, the Tendo is a device which you can use to measure the peak/avg. velocity of your lifts. I've always wanted one, but at $1600 (http://store.sorinex.com/Tendo-Weightlifting-Analyzer-p/t-2.htm) it was way out of my price range.
A small notch is visible near peak systole and is known as the early systolic peak (ESP). The normal peak systolic velocity of the main renal artery is less than 150 cm/sec. The velocity decreases in the distal intrarenal arteries (Fig 14).A B Figure 14 - Normal Doppler waveforms obtained from the main renal artery and segmental renal artery.he length of each kidney is measured and compared to the contralateral kidney. The normal kidney measures from 8.5 - 13 cm in long axis. Differences greater than 2 cm in length between the kidneys is suggestive of renal artery occlusion on the side of the smaller kidney.